JPH0365597B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a data movement system that can move data without error even if the movement of meter reading data for electricity, gas, highways, etc. is interrupted for some reason and the data is moved after the interruption is recovered. Regarding processing method.

[Technical background of the invention]

In general, remote meter reading devices and the like need to store and retain past meter reading data in order to calculate usage charges for electricity, gas, water, and the like. Conventionally, this data storage holding means has taken measures for both the data storage section and the data processing control section that manages this data storage section, and for the former data storage section, measures have been taken for both the data storage section and the data storage section, such as magnetic tape or magnetic disk. Non-volatile storage media are used, or volatile RAM is backed up with batteries etc. to make it non-volatile.On the other hand, the signal processing control section uses batteries etc. to prevent erroneous processing such as data destruction in the event of a power outage. A function is added to enable uninterrupted power outage by backing up data, or to perform interruption processing and data saving processing in the event of a power outage.

FIG. 5 shows the configuration of a conventional device in which a battery is used to back up the data storage unit in the event of a power outage, and the data processing control unit uses the capacity unit to back up and maintain operation during interruption processing and data saving processing. It is a diagram. That is, this device includes a large number of measuring instruments 1...
A meter reading unit 2 that reads the guideline value as meter reading data, a control unit 3 that performs all processing control such as meter reading commands and other data movement of the meter reading unit 2, and a power outage detection unit 4 that detects a power outage state and notifies the control unit 3. A signal processing control section 5 configured by a plurality of storage elements 6 that store and hold meter reading data by the meter reading section 2.
Data storage unit 6 having (0), 6(1)...(n)
and a source system 7 that supplies required voltages to the signal processing control section 5 and data storage section 6. This power supply system 7 receives, for example, a commercial frequency AC power supply 8 and supplies a predetermined operating voltage to the signal processing control section 5, data storage section 6, etc., and when the power supply 8 is cut off, it supplies the storage from the capacitance section 9. It has a power supply unit 10 that supplies an operating voltage for a predetermined period of time after a power outage occurs due to the product charge, and also stores the battery voltage of the battery 11 before the power supplied from the power supply unit 10 can no longer store and hold the data in the storage unit 6. Power supply switching unit 12 that supplies backup voltage to the storage unit 6
is provided.

Incidentally, in the above device, when the power supply is normal, the signal processing control section 5 and the data storage section 6 perform predetermined operations in response to a predetermined operating voltage from the power supply section 10. In other words, the control unit 3 stores the latest meter reading data in the storage element 6(0), and stores the meter reading data that has already been read in the storage elements 6(0) to 6(0).
6(n-1) to storage elements 6(1) to 6(n) to store the memory therein.

Next, when a power outage occurs, in response to this power outage state, in the signal processing control section 5, when the control section 3 receives a power outage detection signal from the power outage detection section 4, a predetermined operating voltage is supplied from the capacitance section 9. After the interruption process and the data saving process are executed, the power supply to the storage unit 6 is switched to be supplied from the battery 11, and the predetermined process is continued after the power is restored.

[Problems with background technology]

However, in the device configured as above, the capacitor section 9
Since the operating voltage of the signal processing control section 5 is backed up using a power supply, a very large capacity is required as the capacitor section 9, and in addition, a power failure detection section 4 is required, making the device complicated and complicated. Larger,
There is a problem that causes an increase in costs. In addition, the control unit 3
It was difficult to judge to what stage the meter reading data had been moved after the power was restored, and there was a risk that the meter reading data could be mistakenly transferred.

[Purpose of the invention]

The present invention has been made with attention to the above points, and provides data that can be reliably stored and retained using a simple and inexpensive configuration when processing is interrupted, and can be moved accurately without errors after recovery from the interruption. The purpose of the present invention is to provide a mobile processing method.

[Summary of the invention]

The present invention provides a flag section for each predetermined number of storage elements of a data storage section having a plurality of storage elements, and each time the latest data is input, the flag section is provided before and after sequentially moving old data to a subsequent storage element. By changing the state of the flag and moving data while determining the state of the flag,
This is a data movement processing method in which only the data storage section is non-volatile and data is moved without errors even after interruption and recovery.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 4. Figure 1 is a configuration diagram when the method of the present invention is applied to a remote meter reading device. unit 20, a data storage unit 30 that stores and holds meter reading data, and each of these elements 2
A power supply system 40 that supplies a predetermined operating voltage to
It is structured as follows.

The signal processing control unit 20 has a control unit 21 that executes predetermined operations according to a predetermined program, and the meter reading unit 22 measures the amount of electricity, gas, water, etc. used based on control commands from the control unit 21. The meter reading data is sequentially read in a predetermined order from a large number of measuring instruments 23 for weighing. 24 indicates a bus line.

Next, in the data storage section 30, for example, the number
A plurality of storage elements 31(0) to 31(n) having a storage capacity of 10 bytes to several 100 bytes, and a flag section 32 added to each of these storage elements.
(0) to 32(n), and the meter reading data read by the meter reading unit 22 is stored in each memory element 31.
(0) to 31(n), and when the meter reading data is moved, the flags in the flag units 32(0) to 32(n) are changed and moved. Specifically, the memory element 31(0) stores and holds meter reading data read through the meter reading unit 22, and the memory element 31(0)
(1) is a part that stores and holds the previous latest meter reading data that is currently being read, and when meter reading is completed, the meter reading data in the storage element 31(0) is set. Memory element 31 (i); i = 2 to n are parts that hold past meter reading data, and each time a meter reading is executed, the data is moved and replaced by the meter reading data that was read one time after the meter reading data. .

On the other hand, the flag section 32(i); i=0 to n indicates the state when data is set in the storage element 31(i); i=0 to n, and the state is changed for each process. This is to reverse the . The flag sections 32(0) to 32(n) need to have independent flags corresponding to the minimum unit of data to be moved during meter reading, but this differs depending on the meter reading method. For example, if all meter reading results are updated for each meter reading, it is necessary to have a flag section for each memory element as shown in the figure.
If only meter 3 is to be read, each meter 23...
It is necessary to have a memory element and a flag section corresponding to the above. Therefore, the storage element i and the flag section 32(i);
It may be considered that there is a plurality of i=0 to n.

Next, the power supply system 40 includes, for example, an AC power supply 41 of a commercial frequency, and a power supply unit 42 that converts the output of the power supply 41 into an operating voltage suitable for the signal processing control unit 20 and the data storage unit 30 and outputs it. It is composed of a battery 43 and a power supply switching unit 44 that switches between the power supply unit 42 and the battery 43. That is, in this power supply system 40, a predetermined operating voltage is normally supplied from the power supply section 42 to the signal processing control section 20 and the data storage section 30, and when the power is turned off, it is detected and the power supply switching section 44 switches the power supply section 42 to the signal processing control section 20 and the data storage section 30. 42 to the battery 43 side and supplies the battery voltage to the data storage section 30. Therefore, the data storage section 30
There is no need to use something non-volatile as
If a non-volatile one is used, the battery 43 and the power supply switching section 44 will be unnecessary.

Next, the operation of the system of the present invention will be explained based on the apparatus shown in FIG. 1 with reference to FIGS. 2 to 4. FIG. 2 shows meter reading data and state changes of flags, FIG. 3 shows an operational flow of meter reading processing, and FIG. 4 shows an operational flow of flag checking. In the initial state before meter reading is performed, all of the flag sections 32(0) to 32(n) are set to "0", for example, as shown in FIG.
Past meter reading data D ₁ , D ₁ ,
Assume that D ₂ and Dn are stored. In addition,
In FIG. 2A, meter reading data _D1 from the last meter reading is set in the memory element 31(0), but at the time the last meter reading is completed, the previous meter reading data is stored in the memory element 31(0). 1) and is stored in memory. By the way, when moving the latest meter reading data to the storage element 31(1), if we consider that the meter reading data remotely read by the meter reading unit 22 is moved directly to the storage element 31(1), the storage element 31(0) ) itself can be omitted, but since they are essentially the same, the explanation here assumes that the meter reading data remotely read by the meter reading section 22 is set in the storage element 31(0).

(1) Data movement processing In the initial state shown in Fig. 2A, the control unit 21
When it receives a meter reading process start command (f ₁ in FIG. 3) based on the program, it gives a meter reading command to the meter reading section 22 . As a result, the meter reading unit 22 reads the pointer values of each meter 23 as meter reading data in step _f1 shown in FIG.
Figure b).

Next, in step _f2 , flag 32(0) is set.
is set to "1" (Fig. 2 C), and data movement begins. In this case, the process moves to step _f3 and all remaining flag sections 32(i);=1 to n are set to "1" (FIG. 2D). flag 32
(0) to 32(n) are all set to "1", the flag section 32 is set at step _f4 .
(0) is reset to "0" (Fig. 2 E).

The meter reading data is transferred from the i-th meter reading data.
Di is replaced with i-1 previous meter reading data D _i-1 , and steps 1 to n are performed. Therefore, in step _f6 , the meter reading data D _o-1 of the storage element 31(n- ₁ ) is set in the storage element 31(n) (FIG. 2). Furthermore, the memory element 31
(n), the flag section 32 is set in step _f7 to indicate the completion.
(n) is reset to "0" (Fig. 2).

Similar data movement is performed from storage element 31(n- ₁ ) to storage element 31(1) in step _f8 .
Proceed sequentially until (Fig. 2). Finally, from the memory element 31(1) to the memory element 31
All meter reading data has been updated up to (n),
All flag sections 32(0) to 32(n) are reset to "0" (FIG. 2), i; i=0
After confirming that ~n are all “0” (step _f9 ), the meter reading process is finished (step
_f10 ).

(2) Interruption of processing and processing after recovery from interruption.

Let us consider a case where an unexpected accident such as a power outage or accidentally turning off the power switch occurs during the process described above. In this case, since no save processing is performed in response to the interrupted processing, it is impossible to continue the interrupted processing exactly as it is after the interrupted processing is recovered. However, at the time of interruption, the data storage unit 30 is made non-volatile by itself or by the battery 43, so each storage element 31(0) to
31(n) and flag sections 32(0) to 32
(n) stores the contents before interruption. Therefore, the control unit 21 controls the flag units 32(0) to 32
By looking at the state (n), it is possible to know to what stage the data has moved, and it is possible to move the data accurately even after recovery from the interruption.The procedure for this will be explained below.

First, during the meter reading data movement process, for example, in steps _f2 to _f9 in FIG. 3, that is, in steps f2 to h in FIG. 2, at least one of the flag sections is set to "1". Now, if the flag section 32(0) is "1" as shown in FIG.
The latest meter reading data D ₀ has been set in (0), but since no other data has been moved, the process moves to step f ₁₈ via steps f ₁₁ and f ₁₂ in Figure 4, and a flag is set. Part 32(0)-3
The process can be executed by setting all of 2(n) to "1".

Next, flag section 32 (i); if i = 1 to n is "1" (Figure 2), data is moved for the i+1st and subsequent storage elements 31 (i + 1) to 31 (n). However, it is unclear whether the data D _i-1 of the i+1-th storage element 31 (i-1) has been moved to the i-th storage element 31 (i). However, the i-1th storage element 31
Since the meter reading data D _i-1 is stored in (i-1), as shown in step _f19 in Figure 4, i-
Data D _i-1 of the first storage element 31 (i-1)
The process may be executed by moving the data to the i-th storage element 31(i).

Therefore, when the power is turned on, the flag section 32
Check the flag states of (0) to 32(n), and if all are not "0", the processing has been interrupted, so you only need to execute the processing as described above. Even if the process is interrupted at any stage, the meter reading process can be accurately completed to the final state shown in FIG.

Next, if the process is interrupted in the state shown in Figure 2B or during remote meter reading by the meter reading section 22, the past meter reading data is stored in the memory elements 31(1) to 31(n) in the initial state (Fig. 2 ), so all you have to do is read the meter again.

Therefore, according to the data movement processing method as described above, each storage element 31 of the data storage section 30
(0) to 31(n) Each memory element 31(0) to 31(n) is made non-volatile by backup by itself or a battery, and when meter reading data is transferred.
The data is moved by changing the flag of the power supply, and the flag state is checked after recovery from the interruption to move the data. Therefore, as in the past, the capacitor section 9 is used as a backup in case of a power outage, and it is used for generating switching control signals at the time of backup. Power supply section 1
0 is unnecessary, and the power supply system 40 can be realized in a small size and at low cost. Further, by simply changing the flag during meter reading and movement of measured values, meter reading data can be protected against processing interruption, and the conventional power outage detection unit 4 is therefore unnecessary.

On the other hand, there is a problem in that the capacity of the storage unit 30 increases due to the movement of meter reading data and flag operations, which lengthens the processing time. It is available at low cost or C-
By using MOSRAM or the like, the storage capacity can be increased without placing much burden on the backup battery 43 of the data storage section 30, and the flag sections 32(0) to 32(n) are no longer required than before. is not a problem. As for processing time, the processing time for moving meter reading data and changing flags is very short compared to the actual time for meter reading, and the overall processing time is almost the same as in the conventional system.

Note that the present invention is not limited to the above embodiments. That is, in the above embodiment, the memory element 31(0)
31(n). For example, the meter reading data is stored in a storage element (not shown) separately, and only the data indicating the position of the meter reading data is moved in the storage elements 31(0) to 31(n). ), and by moving only this position data, the meter reading data may be read from the position data as a result. In addition, the data storage unit 3
For example, a plurality of memory elements 31(0) to 31 as 0
(n) is arranged in a ring, and when using a data update method that sequentially replaces the latest data with the oldest data, pointer data is added to the beginning position of the data, and this pointer data and the update status of this pointer data are indicated. The flag may be used to perform processing equivalent to the fact that the data has been moved. In both of these two methods, the flag sections 32(0) to 32(n) are used before and after moving position data and pointer data.
By reversing the state of the flag and retaining both the data (position, pointer) and the flag, even if the data movement process is interrupted, the flag can be saved without any need for saving. The interrupted movement process can be completed based on the status alone.

Further, in the above embodiment, the movement of meter reading data for electricity, gas, water, etc. has been described, but the present invention can be similarly applied to movement of other process amount data. In addition, the present invention can be implemented with various modifications without departing from the gist thereof.

〔Effect of the invention〕

As described in detail above, according to the present invention, when moving collected data, a flag is added to the collected data itself or to the position data or pointer data related to the collected data, and when the data is moved, the state of the flag is changed and the collected data is etc., so even if processing is interrupted due to power outage or erroneous operation, the signal processing control unit does not have to perform special evacuation processing.
By making the storage part non-volatile, it is possible to provide a data movement processing system that can reliably store data without destroying it, and that can accurately continue data movement by checking the changing state of a flag after recovery from interruption.

[Brief explanation of drawings]

1 to 4 are shown to explain an embodiment of the data movement processing method according to the present invention, and FIG. 1 is a schematic configuration diagram of a remote meter reading device to which the method of the present invention is applied. , Figure 2 is a diagram showing the movement of meter reading data using flags, Figure 3 is a flowchart explaining the meter reading processing operation, Figure 4 is a flowchart explaining the flag check operation after interruption recovery, and Figure 5 is the conventional method. It is a typical block diagram of the remote meter reading device to which this is applied. 20 ... Signal processing control section, 21... Control section, 2
2... Meter reading unit, 23... Measuring instrument, 30 ... Data storage unit, 31(0)...31(n)... Memory element,
32(0) to 32(n)...Flag section, 40 ...
Power supply system, 41... AC power supply, 42... Power supply section, 43... Battery, 44... Power supply switching section.

Claims (1)

[Claims] 1. A plurality of storage elements that store collected data and a flag section added to each predetermined number of these storage elements or to each specific data storage element provided corresponding to the stored collected data. a data storage unit having a data storage unit; a means for making the data storage unit nonvolatile; each time data is collected, the collected data or the specific data in the storage element is moved in a predetermined order and replaced with new data; data movement processing means for changing the flag state of the flag unit before the data movement; and when a processing interruption occurs during the data movement processing by this data movement processing means, the flag state is determined after the interruption is recovered, and the data is transferred. and an interruption recovery processing means for moving the data. 2. The data movement processing method according to claim 1, wherein the specific data storage element is a storage element that stores data indicating a location where collected data is stored. 3. The data movement processing method according to claim 1, wherein the specific data storage element is a storage element that stores pointer data indicating the beginning position of the collected data. 4. The data movement processing method according to claim 1, wherein the non-volatile means makes the data storage section itself non-volatile using a non-volatile memory element or the like. 5. The data movement processing system according to claim 1, wherein the non-volatile means is backed up by a battery during a power outage.